The Specs for a 1993 Buick Roadmaster Engine

by Doug Leenhouts
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With a length of more than 215 inches and a curb weight of more than two tons, the 1993 Buick Roadmaster is larger than the average full-size sedan. Luckily for the Roadmaster and its owners, the engineers at Buick gave it an engine strong enough to get it on down the road with ease.

Engine Size

Only one engine was available with the 1993 Roadmaster: a 5.7-liter V8 with an automatic transmission. This engine was introduced on the 1992 Roadmaster. The 1994 Roadmaster would get a Corvette LT1 engine. The 1993 model's 5.7-liter engine has an actual displacement volume of 5,737 cubic centimeters.


The V8 engine is rated at 180 horsepower and produces 295 foot-pounds of torque. It consumes gas at a rate of 16 miles per gallon on city roads and 25 mpg on the highway. The Roadmaster's 5.7-liter powerplant's compression ratio is 8.3:1. It has a bore of 4 inches and a stroke of 3.48 inches.


The 1993 engine is rated for 87 octane gasoline. Then engine oil capacity is 5 quarts. The engine's spark plug gaps are 0.035 inches. GM recommends that oil be changed every 3,000 miles.

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